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Posted on by DamienMazier

Hey Community,

I can't upload a document to my knowledge base, I've tried with several document types.

do you have the same results?

Thank you in advance,

Best regards

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nicox 169 on at

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Hi @DamienMazier, sorry I don't have an answer with your question, but I am just curious about your maximum file limit. Is that really 512mb?

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Kantasit 10 on at

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Do you have this issues on multiple custom copilot or only this instance?
Have you tried to create a new custom copilot and try to add it there?

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DamienMazier 4 on at

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Hi @Kantasit,

Yes the same issues on multiple custom copilot and a already tried to create a new copilot. But I found one interesting thing.

It's working on an another tenant, it isn't a problem from Copilot Studio but a problem with our tenant settings. I'm not an admin of our tenant, I opened a case to try to identify which policy block that in our environnement.

But if anyone know the solution :) !

@nicox : It's seems to be the right maximum file limit but i can't verify as you know :)

Thank you for your time

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Kantasit 10 on at

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Great! I have seen similar posts with the same issues. There was one post where the user changed their environment from the EU to the US, and while I don’t think this is the solution, it did work for that user. It might be a setting that the admin needs to enable.

I remember we also enabled some services when we tested. Maybe this will help:
https://learn.microsoft.com/en-us/copilot/microsoft-365/microsoft-365-copilot-enable-users

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Bigshow 60 on at

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I'm having the same issue. Did anyone find a solution to this?

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BB-13021257-0 12 on at

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Hi, I have the same problem, have you been able to find a solution?

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AS-13021418-0 30 on at

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having the same issue, unable to upload any files as knowledge. just gets stuck or get "error" but no insight to what the error is. this is frustrating!

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TA-21020933-0 2 on at

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I am facing similar issue with Copilot Studio while trying to add a PDF file or any file to the knowledge section. After uploading the file, its status shows as "unknown" instead of "in progress" or "ready." Additionally, when I test the bot with prompts related to the PDF content, it doesn't provide responses based on the PDF.
Here are the steps I've taken so far:

Verified the file format and size.

Re-uploaded the PDF file.

Cleared browser cache and changes the browser chrome and edge.

Despite these efforts, the problem persists.

Although by adding any website link there is no issue.

I contacted the support team three weeks ago, but they still haven't been able to resolve the issue

Could anyone provide guidance on how to resolve this issue?

Thank you!

Screenshot 2025-0...

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Jay O

167 on at

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Uploaded files greater than 512 MB aren't supported.

Upload files as a knowledge source - Microsoft Copilot Studio | Microsoft Learn

Make sure the enviornment DLP policies have below connectors classified as business connector

Knowledge source with SharePoint and OneDrive in Copilot Studio	Block agent makers from publishing agents configured with SharePoint as a knowledge source. Supports DLP connector endpoint filtering to allow or deny endpoints.
Knowledge source with documents in Copilot Studio	Block agent makers from publishing agents configured with documents as a knowledge source.

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TM-23020143-0 2 on at

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Hello Damien! How you are fine! Try to change the tennante. If still not works, better train your model chunked in some AI with TPU as ( Kaggle, Google, Union).

Link:

https://www.kaggle.com/

https://github.com/unionai

https://developers.google.com/

OR, you can try chunk it in may diferent sites( a litle on GPT, Copilt, Google, Kaglle etc..)

Once you finish the model, you import it to copilot( already trained).

As you can see, most of AI is not so easy to make. Need train the data before upload or the Agent will send many non sense answers.

Regards;

Tiago.

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